I upgraded to win10 and ffxiv launcher is fine, once I hit the green login on both dx9 and dx11 (tried both) I get the mouse pointer and sound but it's a black screen...

My gpu drivers are upto date so I've no idea.
Everything is ran as admin, even in the install folders the .exe are all set to run as admin. Rather stupid if you ask me.

SE have had ample time to set something in stone. I am sure other multi billion companies work faster.